No, make the story even more ridiculous. Tell them how you mistook lube for body wash at the store, and while cleaning your ass in the shower your finger accidentally slid inside, surprising you and causing you to slip on the lube, kicking the shampoo bottle into the center of the shower. And in desperately acting to remove your fingers, your stretched your butt cheeks right as you came down on the bottle

Yes, they know what happened. But the least you can do is give them an absurd story, really play it up. Bonus points for giving them all relevant information as another unlikely accident leading up to the event

They’ll eat it up, they’ve seen enough of this to not really care. But a great story will give them joy for years to come